As a 25 years old guy, people have been telling me I’m a tenor basically since I lost my boy soprano. Trouble is, even though I actually quite like singing high, as I listen (and thus sing along) mostly to 80-90s classic rock, and even though I would say my voice naturally “sounds high”, I don’t think I’m very consistent in my upper range and singing along to those songs makes me feel strained and my throat often feels sore afterwards.
Basically, C3-G4 is my comfortable range in which I can sing effortlessly, without feeling strained or exhausted. Below that, I can technically make it somehow work down to like G2, but it’s definitely not something I would consider great sounding or enjoyable for me. Above G4, there is a relatively sharp cutoff after which it becomes much harder for me. I can still often produce sounds there which I consider okay sounding, but it’s tiring, my throat feels progressively more closed and after prolonged singing like that, I get sore throat. This goes up to about C5 on most days, but during vocal warmups under professional supervision, I was able to make it to like D#5 or so. Also, this range is not very consistent, since on some days it feels almost effortless and nice sounding up to C5, and other times I feel very bad even at A4. Also, just vocalizing in this range is much easier than actually pronouncing words.
So, my question is: are these problems expected for someone who’s been repeatedly told to have a high singing voice (even by singing coaches) and it’s just a matter of a bad technique, or is it my body telling me that trying to sing so high is actually unhealthy and I should stop? I can provide some recordings of my singing here, though I am not sure what to sing to illustrate it the best.